Geologic Map of the Upper Arkansas River Valley Region, North-Central Colorado
Geologic Map of the Upper Arkansas River Valley Region, North-Central Colorado Pamphlet to accompany Scientific Investigations Map 3382 U.S. Department of the Interior U.S. Geological Survey Cover front. View toward the southwest from the valley of the Arkansas River to Mount Elbert (middle skyline), the highest peak in the Sawatch Range as well as the highest in the State of Colorado. Sagebrush-covered terraces barely visible at the bottom of the photograph are underlain by outwash gravel of the Bull Lake glaciation. The tree-covered area, near the western margin of photograph, includes moraines composed of tills of the Pinedale, Bull Lake, and pre-Bull Lake age. Photograph by Ralph R. Shroba, September 18, 2011. Cover back. Bighorn sheep on a large outcrop of Langhoff Gulch Granite, about 5 km north of the town of Granite, Colo. Photograph by K.S. Kellogg, July 2013. Geologic Map of the Upper Arkansas River Valley Region, North-Central Colorado By Karl S. Kellogg, Ralph R. Shroba, Chester A. Ruleman, Robert G. Bohannon, William C. McIntosh, Wayne R. Premo, Michael A. Cosca, Richard J. Moscati, and Theodore R. Brandt Pamphlet to accompany Scientific Investigations Map 3382 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior RYAN K. ZINKE, Secretary U.S. Geological Survey William H. Werkheiser, Acting Director U.S. Geological Survey, Reston, Virginia: 2017 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit https://www.usgs.gov or call 1–888–ASK–USGS.
[Show full text]